If there is a foul odor about the nostrils or their head area, it's coryza...continue with the sulmet treatment til completion. If there is no foul odor, it's a different respiratory disease and sulmet wont help. Antibiotics such as duramycin and tylan will treat the symptoms but wont cure the disease, and will eventually not work due to resistance to the antibiotics. The birds will remain carriers even when symptoms arnt showing. You will have to keep them seperated from your healthy birds and maintain biosecurity. I recommend that you purchase denagard from QC Supply and treat them with it. Denagard has no withdrawal period and most importantly there's no resistance. Treatment dosage is 16cc per gallon of water for 3-5 days. Preventative dosage is 8cc per gallon of water for 3-5 days. The preventative dose should be given to them once a month thereafter. Your other option is to cull.
